Gin-saw-sharpening machine.



W. L. PADGETT.

GIN SAW SHARPENING MACHINE.

APPLICATION FILED SEPT. 1.

Patented Mar. 7, 1916.

7 SHEETS-SHEET l.

THB coLuuBux PLAPDQRAPH co.. WASHINGTON. D. c.

rsHEETs-SHEET 2.

Patented Mar.' 7

, Eme/Wr n cu., wAsHlNuTON. D. c.

W. L. PADGETT.

GIN SAW SHARPENING MACHINE.

APPLICATION FILED SEPT. 7, 19I5.

THB COLUMBIA H ANooRAP W. L. PADGETT.

GIN sAw SHARPENING MACHINE.

APPLICATION FILED SEPT. 7. I9I5.

1,174,892. Patented Mar. 7,1916.

TSHEETS-SHEET 3.

WIW/c5565 THE COLUMBIA PLANOGRAPH co.. WASHINGTON. D. c.

W. L. PADGETT.

GIN SAW SHARPENING MACHINE.

APPLICATION FILED SEPT. 7, 19|5. 1,174,892. Patented Mar. 7, 1916.

7 SHEETS-SHEET 4.

THE COLUMBIA PLANOGRAPH Cu., WASHINGTON. D. c.

W. L. PADGETT.

GIN SAW SHARPENING MACHINE.

APPLICATION FILED SEPT. 7. I9I5.

1,174,892. Patented Mar. 7,1916.

7 SHEETS-SHEET 5- W.'L. PADGETT.

GIN SAW SHARPENING MACHINE.

APPLICATION FILED SEPI. I. IsIs.

Patented Mar 7, 1916 7 SHEETS-SHEET 6 I" |QII I IIIIIII 2 fm/e//Zr /gv/y giga/f,

////zfg I-IIIIIII l. E i. .Vf m .Mmmm I Y 8s 1 I? I Wg. .IIII H T I ,w f I. W9 QU tI-IE COLUMBIA PLANouRAPH C0.. WASHINGTON. D. c.

W. L. PADGETT.

GIN SAW SHARPENiNG MACHINE.

APPLICATION man SEPT. 7. 1915.

Patented Mar. 7, 1916.

7 SHEETS-SHEET 7.`

GIN-SAW-SHARPENING MACHINE.

Specification of Letters Patent.

Patented Mar. Y?, 1916.

Application filed September 7, 1915. Serial No. 19,30%.

To all u1/tom t may concern.'

Be it known that I, WYLEY L. PADGETT, a citizen of the United States, residing at Spartanburg, in the county of Spartanburg and State of South Carolina, have invented new and useful improvements in Gin-Saw- Sharpening Machines, of which the following is a specification.

This invention relates to machines for sharpening gin saws, proposing a machine which includes both tiling and gumming instrumentalities and means for automatically shifting the saws in order to present the teeth thereof successively to the said instruientalities rllhe objects of the invention, briefly stated, are to provide a simple and efficient machine for sharpening cotton gin saws; to provide a machine which will perform its work with rapidity and accuracy; to provide a machine which may be readily adapted to saws of varying diameter; to provide a machine having its saw filing and gumming ,instrumentalities so organized that the teeth of the saws can be filed to any shape or angle desired; to provide a machine wherein the saw teeth will be filed in symmetrical relation to the planes of the saws; and to provide a means -for quickly and conveniently shifting the ma chine relatively to the group of saws to be sharpened in order to bring the machine, upon the completion of the work on one saw, in operative relation to the saw next in order I in the group.

The invention consists in certain novel features of structure, combination and relation which will be fully pointed out in the succeeding description.

An embodiment of the invention is illustrated in the accompanying drawings, wherein t# Figure 1 is a side elevation of a saw filing and gumming machine in which the features of the invention are incorporated; Fig. 2 is a central longitudinal sectional view thereof; Fig. 3 is a top plan view thereof; Fig. 4 is a bottom plan view thereof; Fig. 5 is a perspective View of the front portion of the machine; Fig. 6 is a crosssection on the line'G- of Fig. 1 looking in the direction of the arrow; Fig. 7 is a detail cross-sectional view on the line 7-7 of Fig. 3; Fig. S is a diagrammatic plan view showing details of the iiling instrumentality; Fig. 9 is a detail cross-sectional view on the line 9-9 of Fig. 2 looking in the direction of the arrow; Fig. is adetail cross-sectional view on the line 10-10 of Fig. 2 looking in the direction of the arrow.; Fig. 11 is a detail sectional view showing the supporting means for the sliding cross head of the gummer shaft.

Similar characters of reference designate corresponding parts throughout the several views.

The instrumentalities ofthe machine are supported directly or indirectly from a somewhat elongated bed plate 1 which preferably has an inverted channel shape in cross-section, as shown in Fig. 6, and is, in turn, suitably supported at its front and rear ends. The support for the machine at the front end of the bed plate preferably comprises a pair of spaced angle irons 2 having their side flanges extended downwardly and connected at appropriate intervals by bolts on which are mounted spacing sleeves 3. The flanges 2 are conveniently supported on pedestals a or otherwise. The support for the machine at the rear end of the bed plate 1 preferably comprises a edestal 5, the legs of which may be provided at their lower ends with rollers or casters, (not shown). The connection between the bed plate 1 and the pedestal 5 preferably comprises a transverse plate 6 which is pivoted Vto depending lugs 7 carried by said bed plate, a bolt 8 provided near the upper end of the pedestal 5 for engagement through a suitable opening in the plate 6 and a wing nut 9 threaded upon the inner end of the bolt S. Obviously, by removing the nut 9 from the bolt 8 the pedestal 5 and the bed plate 1 may be disconnected.

The saws to be sharpened are supported from the angle irons 2 through the intermediary of upright bearings 10 provided at the ends of said angle irons and having bearing arms 11 and 12 preferably provided with friction rollers 13. The arms 11 which are at the upper sides of said'bearings are pivoted at their outer ends as at 1li to the arms 12 and at their inner ends are provided with pivoted retaining bolts 15, which, in operative relation, engage through slots in retainingplates 16 projecting rearwardly from the bearings 10. rllhe bolts preferably carry expansive coil springs 17 which engage under-the plates 16 and tend to press the bolts downwardly so as to vdraw the upper bearing arms 11 toward the lower bearing arms 12. The gin saws,

designated A, remain during the sharpening operations in the normal order and'ma'n- 'ner of their assemblage upon their shaft or mandrel B andthe ends of the latter kproject between the arms 11 and 12 and engage the friction rollers 13 carried by said arms. By virtue of this relation, an accurate positioning ofthe saws with relation to the 'sharpening machine lis insuredk and the rotary step-by-step movement ofthe saws Vis facilitated.

Vrlheupright standards of the bearings 10 are adjustably fitted in clamping sleeves 18 and are normallyheld against movement by bolt-and-nut fastenings 19 which connect the removable'outer members of the sleeves 18 and they fixed inner members of said sleeves, the said inner members being formed asv parts of platesv 2O which extend across and rest upon the angle irons12 and are, yin turn, clamped upon said angle irons through the intermediary Yof upper and lower plates 231and 24 and bolts 25 connecting said plates. The plates 20 are adjustable lengthwiseV ofthe plates 23, and are provided with slots 26 through which thebolts 25 projeet.

The plates 24 'are Ysufficiently narrow in Y widthvto vpermit their introduction through f the Ylong gitudinal space between theI angle irons 2 and when the plates 24 have been passed through said spaces, they areYV turned onthebolts 25 as pivots to positions-trans` verselyfof the angle irons wherein they en-V gage the under faces thereof. Obviously,

:by adjusting the plates 2O relatively tothe plates' 23, the bearing sleeves V13 may be made to project to any desired extentV within'V lthe range of. adjustment in front ofthe angle irons-2. The Velevation ofthe gin saw Y fshaftB relatively to theA angle irons V2jis "7' .engaging width, as shown 1n' Figs. 3 and 4, to extend derivedfrom a transverse,

Y tatable'sha'ft 30 'located-near Vthe rear end of .themachin'e and journaled inbearings 31 provided on'fside frame determined by vertical adjustments of the -upright standards Vof 4the bearings 10 rela- 'tively to the'sleeves 1S by" which saidfsta'nd- Y ards are clamped. Y v

The instrumentalities of the machine are a. saw filingV mechanism including a pair of reeiprocatory files 27 which work in inter-`Y sectingV relationV at opposite sides of the saw 1 to bey sharpened, aY saw gumming mechanism y.including a rotary file 23V which .works inthe v spaces between the saw teeth,and av saw feeding'mechanism including a saw tooth pawl29 which is; preferably of a acrossV Yand simultaneously engage V threev of l the saws. The power for the .operation vof the"several.Linstrumentalities abovenamed is continuously romembers 32. The

Y The iile'carryingfbz shaft 30 `projects at one or both ends vbeyond Ytalities are'directly operated from 'a` trans- Y verse shaft 34 located at the rear endfof the machine and journalediin bearings 35 secured to the frame members 32. The shaft 34 is located at some distance belowV and in the .rear of the shaftY 30 and is suitably geared to the'latter, the gearing preferablyy sprocket wheel `on the shaft'34, and a chain 38connecting said sprocket wheels.

TheV saw filing mechanism comprises a pair` of reciprocatory file-holding bars'39 rcomprising a relatively large sprocket wheel 36'on' the shaft 30, a substantially smaller against which the files 27, (which are of ordinary triangular form), are heldbyv suitable clamps Yor clips 40, guides 41 through which the bars 39 are reciprocated'n the dij Y f rection of their axes, pivoted base plates 42 carrying the guides 41 and! from which said guides are upright, slidablecross heads 43 working inY guides 44 secured on the frame members 32, and lin ks 45 connecting' the Vi' Ycrossiheads 33 andv the bars39. The saw. A

iilinrf instrumentality is onerated for theY b lVVV L f purpose of sharpening the saws Virom the -shaft 34 through the intermediary Yo f"c"rankV ioo arms 46 provided` at the endsfofsaidsha'ft are preferably disposed at angles to one their operation. 7

trs 39 are Vlocated respectively above .and belowV one another and have a converging relation, as clearly shown Y, andipitmen 47 connecting the'crank` arms 46 A and thejcrossheads 43. TheV crank arms 46j 1 l v another in order that thefilesmayfbemoved in oppositel .directionsV during periodsof .Y

in Figsy3 and, whereby the files 217 willi be reciprocated` in intersecting paths k'and Will Work atV opposite sides ofthe Smau, 10Q i'sharpened. u 'Y y Y i Y The saw gumming y mechanismY includes .a

shaft'48 which at'itsfrontV end carries the' glimmer 28,1 an oscillatorybearing 49" forf the vrear end of saidk shaft, arlbearinggofor f; V12C i oiprocatorycross head 5 1 carrying the .bfe ar f Y `1ng50 and a' pivotally mountedfframe 52.1

the front end of said shaft, averticallyfre;

along Vwhich the cross-head 51 slidein.

. its Vreciprooatory action. jThef'shaft is f ldriven fromlthe shaft34'through1theinteijz mediary ofbevel gears53 Yamd64 ofn-saidY shafts 48 and 34',-respe ctively, 'the gear53 being' of substantially Vsmaller diameter "557;

than the gear 54, wherebygtliespeed o ftheY shaft 48 is multiplied.A

. The gear 43 is, as Y laoYY shown in Fio. 2, provided with a feather which engages in an elongated key-way at the rear end of the shaft 48 whereby the latter may be moved in the direction of its axis relatively to the gear 53. without becoming disconnected from said gear. The object of providing for a movement of the shaft 48 in the direction of its axis relatively to the gear 58 is two-fold; first, to

'permit a slight axial play of the shaft 48 during the operation of the gummer 28, which play is taken up or cushioned by an expansive spring arranged on the shaft 48 between the glimmer and the bearing 50, and second, to provide for a lengthwise adjustment of the shaft 48 whereby to cause a corresponding projection or retraction of the glimmer' 28 for the purpose of adapting the machine tov saws of different diameter. The bearing 49 for the rear end ef the shaft 48 is also utilized for the gear 53 and is providedY with a rearwardly extending socket in which a hub extension of said gear is journaled, a screw 5G engaging in an Yannular groove in the hub extension of the gear 53 being employed to hold the gear against axial displacement. rl`he portion of the shaft 48 between the lgears 49 and 50 is preferably inclosed by a stationary sleeve 57, one end of which is socketed in a forward extension of the bearing 49 and the other end of which is'threaded and carries an adjusting nut 58, which lits over the rear portion of the bearing 50 and is provided with a screw 59 engaging'in" an annular groove in said bearing. When the screw 59 is loosened or slackened, the nut 58 may be turned relatively to the bearing 50 and to the shaft'? and the obvious elfect of thiis turning the nut is to project or retract the bearing 50 relatively to the sleeve 57. rlhe bearing 50 is provided with a screw GO which .engages in an annular groove G1 in the shaft 48 andV it is obvious that when the bearing 50 is projected er retracted relatively to the sleeve 57, such movement is transmitted to the shaft 48 through the screw 60 and it thereby results that the giimmer 28 is similarly projectedV or retracted. In this waythe position of the gummer may be adapted to saws of varying diameter. Upon wholly disengaging the screw 60 from the groove 8l, the shaft 48 may be withdrawn lengthwise from the forward end of the machine. ln certain operations, it may not be necessary or desirable to employ the guinmer, and at such time the shaft 48 with the giimmer attached thereto is withdrawn from the machine in themanner described. The groove 61 is siiiiiciently wide to permit the shaft 48 to have the above-described loose play in the direction of its axis. The shaft 48, in addition to the rotary movement transmitted thereto by the gear 53, also has a vertical oscillatory movement in the plane of the machine in order that the guinmer may be disengaged, at periods in the operation of the machine from the saw, such disengagement of the-gummer from the saw being provided for in order to permit of the operation during the periods of disengagement of the saw feeding instrumentalities. To provide for such oscillatory movement of the shaft 48, the bearing 49 is also mounted for oscillatory movement and is provided with end studs G2 for engagement by pivot screws 63 carried by the frame members 32; and the front end of the shaft 48 is snpported, as above explained, through the intermediary of the reciprocatory cross head 5l and the frame 52, which latter is pivote'd at its lower end, as at 54, to the bed plate l along an axis transverse to said bed plate. The bearing 50 is mounted for oscillatory movement relatively to the cross head 5l, which latter has its side bars formed to straddle said bearing and provided with pivot screws 65 to engage in recesses in the adjacent sides of the bearing 50.

rlhe saw filingand saw grimming instrumentalities`l in addition to their normal operations of filing and gumming the saws, are operated at periods in the action of the machine to disengage the saws in order to permit of the action of the saw feeding instrumentalities.

The saw gnmming instrumentality is operated to disengage the saws by elevating the shaft 48 about the studs 62 as an axis and upon the completion of the operation of the saw feeding mechanism the shaft 48 is lowered in order to engage the gummer Q8 with the adjacent recess in the saw. The mechanism for operating the saw gumming instrumentality to effect the disengagement of the gnmmer from the saw upon which it operates during an interval in which th saw feeding mechanism is operated is preferably of the following` constriictiom-The cross head 5l has a rearward extension 6G which is connected, as will be hereafter described, to a vertical reciprocatory red 67. The rod G7 derives its motion from the shaft 30 through. the intermediary of an eccentric 68 on said shaft, a strap 69 depending from said eccentric and at its lower endr extending through an opening in the bed plate. a bell crank lever 70 pivo ed to the bed plate adjacent the under face thereof and to which the lower end of the strap G9 is connected, a second bell crank lever 7l similarly pivoted to the bed plate near the front end ef the machine and to which the lower end of the rod G7 is c nnected and a link 'T2 connecting the bell cranks 70 and T.

rllhe saw filing instrumentality is operated to disengage the saws periods in the action of Athe machine during which the operation of thc saw feeding mechanism takes viov its upper' end against a stop collar or nut 97. yTo facilitate the assemblage of the machine relatively to the saws, as well as to' adjust the angle of the pawl 29 whenever there is. occasion for suoli adjustment,.the rod 83 whichV carries the spring 82 is provided at one side thereof with a handle 98 which works in relation to a rack quadrant 99 secured at the adjacent side of the bed plate 1 and is provided with a tooth to engage said quadrant. The handle 98 is connected tothe rod 83 for lateral pivotal movement in order that it may be disengaged from and engaged with the racl; quadrant 99 and the engagement of the handle 98 with said rack quadrant is assured by a retractile coil spring 100 having one end connected to said handle and having its other end connected, in the embodiment disclosed,

to one of the side bars of the frame 52 along which the cross head 51V slides. Upon disengaging the handle 98 from the rack quadrant 99, said handle may be manipulated, as is obvious, to turn the rod 83 and thereby raise or lower .the spring 82 which yielclingly supports the pawl 29. As the spring' 82 is raised, the pawl 29 is similarly raised, and as the'spring 82 is lowered, the pawl 29 is similarly lowered. To raise the pawl 29 or to increase the tension ofthe spring- 82 upon said pawl, it is unnecessary to disengage the handle 98 from the rack quadrant 99, all that is required being simply to move the handle 98 downwardly, in

which movement its tooth rides along the iile of the Vquadrant 99. On the other hand, to lower the pawl 29 or to decrease the ytensionv of the spring 82 upon said pawl, the handle 98 is disengaged from vthe quadrant 99 and is raised `to the position desired. By raising the handle 98 lto a position above the rack quadrant 29, it is possible to permit the'pawl 29 to Vdrop inte a nearly -vertical position, and said pawl is placed in such a position in connection with the assemblage or the dismantling of the machine relatively to the saws. A- Y Adjustments of the extent toy which the pawl 29,` projects beyond the front rof the machine areprovided for, preferably, by making the rod '75' in two sections,'the adj acentends of which are socketed in a conv necting block 101 as shown in Fig. 2. j By moving the sections within the range oi1 adjustment vprovided yfor toward-or away from one another the pawl 29 will be caused to sta-nd nearer to or farther from thefront of the machine, as is obvious. v A

in addition toI the saw filing, saw gumming, and saw feeding instrumentalities above described and all of which participate inthe normal operation of the machine, the invention includes means for effecting a relative transverse movement of the machine and the saws, such movement being effected when the sharpen-ing operations are complete as to one saw yand the machine is to be positioned to work upon the saw next in order in the series.

. in changing 'the position of the machine circumference of the saw with which they f are alined, then laterally to aline ,its ininstrumentalities with the saw next in order in the series and then forwardly to engage its instrumentalities with the saw to loe sharpened. To provide for such rearward, lateral and forward movements of the inachi -e, connecting means is interposed between the bed plate 1 and the angle iron support 2 which includes certain elements associated with said angle irons and slidable longitudinally thereof, and other elements associated with the bed plate 1 Aand slidable in the direction of the longitudinal axis of the machine relatively to the elements which are associated with the angle irons. The elements which are associated with the angle irons comprise'superposed plates 102 and 103. The plate 1102 extends transversely acrossv the upper face of the angle irons and projects for some distanceY rearwardly of said angle irons and the plate l03 which is rigidly connected by bolts or otherwise to the plate 102 extends longitudinally of the angle irons and has a central portion which tits closely in the longitudinal space between the angle irons and lateral extensions 10sL which engage under the angle irons at each side of the longitudinal lspace therebetween, the p said extensions, in combination with the overlying portions foi'l the plate 102, defining channels into which the co-planar portions of the angle irons project. The plates 102 and 103 are movable as a unit longitudinally of the angle irons in a manner to be hereafter explained and the machine as an entirety is movable with the said plates during the longitudinal movement thereof,

Lthe longitudinal movement of the plates 102 and108 thus eiiecting a movement of the machine in a direction transverse to its axis.

rlhe elements which are associated with the v machine and which are movable relatively to the plates 102 and 103 in the direction of' the longitudinal axis of the mauponthe plate V105 and is connected by bolts or otherwise to brackets 108 which `de- 'plate 105. tween the bed plate of the machine andthe secured at its forward endY to the plate 105 and projecting beyond the rear end of the An operative connection b'eplate 105 is provided by'a screw stem 110 which has threaded engagement in a-bracket 111 depending from the bed plate 1 and which at its forward end is swivele'drin `an angular depending extension Vr112 provided at the krear end of the keeper 109.` Y Y The plate 102 is preferablyprovided with a guide member 118 which is secured by bolts or otherwise tov the'A under face of the plate 102 adjacent the outer side of the rear angle iron 2 and has a channeled cross section in order that it may lit over the depending portion of said rear angle iron 2.

' The operation of shifting the position of the Vmachine, to adapt the instrumentalities thereof to a particular saw to be sharpened is initiated by the movement of a lever y114 which is pivotedy at its inner end as at 115 Vvto a lug or bracket carried by the plate 102V Vand is located adjacent the under face of the plate 102. The shifting movement of the machine-in the direction of its longitudinal .axis is effected throughthe intermediary Y of linkv 1'16'which .connectsV theV lever 114 the saws is to be changed, the lever Y114 is` disengaged from the catch 118 (by spring` ing said lever upwardly or by springing said catch "downwardly, or by Vspringing both said lever -and saidV catch in the Vmanner stated) and thereupon 'movedrearwardly as far asis permitted yby the keeper 117, which said keeper is preferably providedwithan adjustable stop 1191er limiting the rear-Y' i ward movement of the lever114. VWhen the lever' 114 is thus moved rearwardly, the plates 105 and 106'and the bed plate 1' participate as a unit in sucht rearward movement and the same action occurs in a reverse direction when the lever 114 is moved forwardly into its normal position. The catch 118 obviously prevents any accidental movement of the lever 114 and holds the machine in operative relation to the saw upon whichthe instrumentalities work.

Asstated, the operation of the lever 114 f in the manner above described is effective to shift the machine relatively to the saws and such shifting of the machine involves notV only longitudinal lmovements thereof in the direction of its axis, but also a movegitudinally of the angle-irons 2. f The move-` ment thereofv transverse to its axisandlon-f,y

ment of the machine in the direetionof its axis is effected' through the 'intermediary Y of the link 116, as above lexplainedrV Thek movement` of the machine V'direction transverse toits axisfis eected-byadog 1 20 cooperating on the one hand with `rack teeth 121 provided onfan acent side edge of the plate 1 05,and.on`the"other handwith 75 a clamp 122 mounted onthe rear 4angle iron 2. The clamp 122 vcomprises aV plate 123v which extends across the rear, angle iron- 2,

ing lugs 124 whichtakejagainstfopposite edges of the rear angle iron 2. The lugs rear angle iron. Ona-the votherl hand, slidable movement 'of the clampV isprevented when an outward-thrust'isexerted againstprojectingrearwardlybeyond the saine and Y -upon the rear projecting portion ofpwhich Y the dog-120 is pivoted; and. a pair of engag-l canted, may be moved slidably along said l the rear end of the plate 128,' the lugs ,124-v at such time `having a-friction bite against said plate Vwhichis augmented `by .providing one of said lugs, preferablyV the one which works in the space between the angle irons 2, with teeth to engagethe adjacent( edge of the-rear angle iron. The clamp is normally canted tinto a" somewhat oblique position by a retractile vcoil spring ,125 con- 'i .i nectingthe plates 123l and Y1.02 and thel dog 120 is kept in engagement with one'of the i teeth 121 by a suitablejspring V126. When 'Y the lever 114 is moved rearwardly andthe Y machine, through'theintermediary ofthe` v10:Y

link 1'6, is shifted rearwardlyV in the direction of itslongitudinal axis, that particular tooth 121'with whichthe dog 120 is engaged i* will act on said dog toc'avuse the sameto j exert an outward thrust uponjthe rear end of the plate 123, in consequence of which the clamp 121 willV bind aga/inst the rear` Vangle iron 2 and will ilthusibe immovable, f

while the dog wil 1"yieldpivotally o' against the tensionof'its springV 126 and; in

such 'pivotal yieldingv movement wiIl'shit the plate 102 and therewith thelmachine in,

a lateral direction through Vav distance equal i715 f i to the space between theadjacent saws.

When the lever 114 has been moved rear.-y wa'rdly as far as is permitted- -by the-stop 119,'thejlateral shifting of the machine "in the manner explained is Vcompleted andV thereupon the lever'Y 114is moved in a re# verse direction, or'forwa'rdly into its normal position, ultimately being engaged by the ofthe lever 114, the machine is, through the axis to engage its instrumentalities with the lcatch`118. During the forward-movement L17/esse saw to be operated on, and as the machine travels forwardly, the dog 120 1s held 1n Contact with the tooth 121 by'which it was previously Voperated and, hence, is moved forwardly with the plate 105. `Such torward movement of the pawl by its spring 126 permits the spring 125 to draw the clamp 121 toward the machine into the position relative to the machine which said clamp normally occupies; and in this way he clamp is reset so as to be ready to cooperate with the dog 120 in connection with the neXt shifting operation oi3 the machine.

1n connection with the shifting of the machine from saw to saw, as above eX- plained, the plates and 106 'move as a unitwith the machine in the'direction oi its longitudinal axis. The plate 106 is. however, movable relatively tothe plate 105 and when so moved effects a corresponding movement of the machine. rlhe object ot' such a movement otthe plate 106 relatively to the plate 105 is to adapt the machine to saws of diiierent diameter by regulating the degree to which the files 27, the gummer 28 and the saw 1feeding pawl 29 project at the iront ot the machine. Such shifting or adjusting movement of the plate 106 is provided for by the screw stem 110 which at its rear end carries an operating handle 127. The screw stem 110 is held against longitudinal movement by virtue of its swivel connection with the keeper 109 and consequently, being threaded through the bracket 111 produces a longitudinal movement of the bed plate 1 and therewith of the machine in a direction which corresponds to the direction of rotation of said screw stem. rl`he plate 106 participates in such longitudinal movement'of the bed plate 1, since it is connected t the brackets 108 carried by said bed plate. The keeper 109 which has ak square cross section fits conformably in recesses defined conjointly by the brackets 10S and the plate 106 serves as a guide for the machine in its longitudinal adjustment consequent to a rotation of the screw stem 110.

As previously stated, the machine may be adapted to saw teeth et varying form and angle; and the `manner 01"' adjusting the.

guininer 28 with the purpose ot such adaptation in view has already been described. Adjustments of the angles ot the tiles 27 for the purpose ot' adapting said tiles to variations in the torni and angle of the saw teeth are made by chan ging the angle/ot the tile carrying bars 39, the connections between said bars 39 and the links el5 and between linlfs and the crcss ieads L13 being suiliciently lcose to permit a certain play a vertical direction oi`l the bars 39, which play is utilized in making the aforesaid adjustment of said bars. The guides L11 through which the bars 39 slide include a vertical frame 123 which is rigid with the base plates 112 and adjustable guide bars 129 and arranged respectively above and below the bars 39 and secured to the slid frames 128 by bolts 131 which pass through vertically elongated slots 132 in the trame 128. The guide bars 129 and 130 are ot angular cross section to engage over or overhang the bars 39, as shown in Fig. 5., and they are connected at their rear ends by a plate 133 through which the screws 131 at the rear ends ot the bars 129 and 130 pass. For the purpose of adjusting the bars 129 and 130, screws 13d are arranged above the bar 129 and similar screws 135 are arranged below the 130, the said screws passing through apertured lugs provided on the Jframe 128 and being equipped with suitable loclr nuts to hold them in any desired position. rThe bars 129 and 130 may be adjusted pivotally or in rectilinear manner within the range of adjustment providedor by the slots 132, and by adjusting the bars 129 and 130 pivotally the angle at which the iileV holding bars 39 project may be l slightly changed, raised or lowered, as is obvious, while by adjusting the bars 129 and 130 in rectilinear manner the bars 39 may be raised or lowered to changel their elevation butv without changing' their angle. 1n this way it is possible te adjust the positions of the tiles in accordance with the particular form of saw teeth which are to be operated on and it is thus assured that, regardless ot the form of saw teeth to be sharpened, the machine shall give the most etlicient results. Unduc friction which might otherwise be occasioned by contact of the tile carrying bars 39 with the frames 12S is prevented by the use of spacing plates 138 of narrow extent which are held by the rear pairs of bolts 131.

1n order to insure that the saw shall always be kept in the proper plane relatively to the instrumentalities, and to thus compensate tor any lateral distortion of the saw from its plane, it is preferred to associate with the guinmer 28 and with the feed pawl 29, saw guides 136 and 137 which, in each instance, are formed with kerfs into which 'the marginal portion ot the saw projects and which are secured, in the case oi: the guide 136, to the bearings 50, and in the case ofthe guide 137 to the shanlr of the pawl 29.

The operation of the machine will be read-- ily apparent 1from the foregoing description. The gearing between the main shaft 30 and the shaft 31 is such that a relatively slow rotation of the shaft 30 will produce a relatively rapid rotation oi the shaft h ence, a relativelyA rapid reciprocation of thel Cil each revolution of the shaft 30 the gummer shaft i8 and therewith the gummer will be elevated to disengage the gummer from the 1 saw teeth and during the elevation of the shaft 418 the feed pawl 29 will be operated t0 'rotate the 'saws' through a distance equiv-a-V lent tc the length of a tooth. ln connection with the operation of the pawl 29 the files 27 Vwill be moved vin the manner already describedaway vfrom the sides of the saw in order' that they. may present no obstacle toy therotation of the saws by the feed pawl 29. After the saw has been rotated by the feed pawl 29 through a distance equivalent to the length of a tooth, the said pawl is reset, the files 27 areV moved toward-one another to engage at the side ofthe tooth now presented Y thereto and the gummer shaft 18, and therewith the gummer, V is lowered to engage the gummer into the teeth immediately following the one previously operated upon by the glimmer. The above operationsv are performed-in Vautomatic sequence until all the teeth in the saw have been operated upon by the Vfiles and the gummer, after which the machine is shifted to a position wherein it is alined with the saw next in order-in th series, the shifting ef the machine and the engagement of its instrumentalities with the next succeeding saw being effected by an operation ofthe lever 114C in the manner previously explained.

Having fully described my invention, I

1. In a gin saw filing machine, a base, a transverseA main shaft supported adjacent the rear end of the base, reciprocatory file carrying bars arrangedV longitudinally of thebase,'a rotatable gummer shaft extending longitudinally of the base, a Vsecond transverse shaft, multiplying gearing for driving the second .transverse shaftv fronr` the first one, the second transverse shaft Vhaving cranl:l arms, operative connections between said cranlr arms and said reciprocatory file carrying bars and bevel Vgearingbetween said second transverse shaft and said guninier shaft.

2. ln a ginsawliling machine, a base, a

transverse main shaft supported adjacent the rear end ofthe base, i'eciprocatory-iile carrying bars arranged'longitudinally of thebase, a rotatable gummerY shaft extending longitudinally of the basea second transverse shaft, multiplying gearing' for driving the second transverse shaftv` from" the first one, the second transverse shaft having cranlrarms, pivoted base plates sup- 'shaft and said summer shaft.

porting said fileV carrying V bars,;fanY i oscilla-` Y tory bearing' for said gummer shaft, operative connections between said VVcrank arms and said recip'rocatoryV` file carrying bars,

bevel gearing between said second transverseY shaft and. said guinmer shaft, means operated from said inainrshaft for raisingsaid guminer shaft during a period of each revo-V lution of said main shaft and other means operatedfroin said main shaft for moving said pivoted base plates about their pivots durin'lY a neriod'ofeach revolution of said b i Y main shaft.-

3. In a gin saw ling machine, a base, a

transverse 'main shaft supported adjacent the rear end of the base, reciprocatorylile 'carrying bars arranged longitudinally V.of

the base, la second transverse shaft, gearing betweenV said shafts, operative connectionsk vbetweensaid second transverse `shaft and said reciprocatory file carrying bars, pivoted base plates supporting saidkfile carryingbars, a saw feed pawl, means; operated fromsaid main shaft for operating said saw Vfeed pawl during a. period of each revolution of said main shaft, and means operated'v by .anAv element of said last-named means for moving Vsaid base plates about their pvc-ts during arpericd of each'revolution'of said main shaft. v Y el; 1n a gin saw vfiling machine,'albase, a

transverse' main. shaft supported `adjacent the rear endgof the base, reciprocatory file carrying bars arranged longitudinally fof,

the base, asecond transverse shaft, gearing between saidpshafts, operative connections between said second shaft and said reciprccatory vfile carrying bars, pivoted-'base plates supportingk said file' carrying bars, a saw feed pawl, means-operated from said ,mainshaft `for operating said saw Vfeed pawl during a period of each revolution Vof 'said main shaft and including a reciprocatcr rod and o aerativeconnect'ions between c 7 in said reciprccatory rod andsaid pivotedbase plates to,V move the latter about their pivots iio in .consequence of an operative movement of said rod.

In a gin saw filing machine, a baise, a transverse shaft supported adjacent the rear end of the base, gearing forvdriving Vsaid f end of the baserand pivotallyjmounted vfor movement in vthe vlongitudinal Yplane of the VI ifiachine, a cross hcad-slidably mounted in said frame, a bearingcarried'bysaidcross head for the front vend of the rdummer shaft b i i 7 means for periodically raising saidcross head, andgearing between said 6V. ln a gin saw Vfiling, machine, abase, a

transverse:

shaft, a longitudinally extending giimmerV f shaft, an oscillatory :bearing for said guminer shaft, a frame arranged at the' front:

transverse shaft supported adjacent the rear end ofthe base, driving .meansY therefor, a

longitudinally extending gummer shaft, an oscillatory bearing for said gummer shaft, a frame arranged at the front end of the base and pivotally mounted for movement in the longitudinal plane of the machine, a cross head slidably mounted in said frame, a bearing carried by said cross head for the front end of the gummer shaft, means for periodically raising said cross head, gearing between said transverse shaft and said gummer shaft, a sleeve surrounding said gummer shaft and extending from said oscillatory bearing, and a nut connecting said sleeve and said bearing carried by said cross head and operable to adjust said bearing whereby to regulate the projection of the gummer shaft, the gearing between said shafts permitting of longitudinal adjustment of the gummer shaft.

j 7. In a gin saw filing machine, a base, a transverse main shaft supported adjacent the rear end of the base, a rotatable gummer shaft extending longitudinally of the base, a second transverse shaft, gearing between said transverse shafts, gearing between said second transverse shaft and said gummer shaft, an oscillatory bearing for said gummer shaft, a vertically reciprocatory cross head arranged near the front end of the by said cross head.v

base, a bearing carried for the front end of the gummer'shaft, an

keccentric on said mainV shaft, and operative connections between said eccentric and said cross head to raise the latter during a period of each revolution of said main shaft.

8. In a gin saw filing machine, a base, a transverse main shaft supported adjacent the rear end of the base, a saw filing instrumentality, operating means therefor,means for periodically disengaging said saw ling instrumentality from the saw upon which it works, a saw feed pawl, a spring held lever` carrying the said pawl, a reciprocatory rod connected to said lever, a pivotally mounted arm operatively connected to said rod, and cam means. operating upon said arm during each revolution of said main shaft.

9. 1n a ginsaw `filing machine, a base, a

i transverse main shaft supported adjacent the rear end of the base, reciprocatory file carrying bars, operative connections between said main shaft and said file carrying bars, pivoted base plates supporting said file carrying bars, a saw feed pawl, a reciprocatory rod for operating said pawl, means actuated by the main shaft for operating said rod during a period of each revolution of saidV main shaft, a block mounted on said rod and movable therewith, and links connecting said block and said pivoted base plates.

10. In a gin saw filing machine, a base, upright frame members arranged near the rear end thereof, a transverse shaft supported between said frame members, operating plates y plate,

means for said shaft, crank arms projecting from the ends of said shaft, reciprocatory file carrying bars extending longitudinally of said base, supporting guide means for said bars, reciprocatory cross heads, longitudinal guide means for said cross heads arranged on each of said frame members, pitmen connecting said cross heads and said crank arms, and links connecting said cross heads and said file carrying bars.

11. In a gin saw filing machine, a base, upright frame members arranged near the rear end thereof, a transverse shaft supported between said frame members, operating means for vsaid shaft, cross heads reciprocatory in the longitudinal plane of the machine and operated by said shaft, reciprocatory file carrying bars, supporting guide means for said bars, pivotally mounted base carrying said supporting guide means, links connectingsaid file carrying bars and said cross heads, and means for periodically moving said base plates about their pivots.

Y li. 1n a gin saw filing machine, a base, a

transverse main shaft supported adjacent reciprocatory crosshead arranged near the front end of the base, a bearing carried by said. cross head. for the front end of the gummer shaft, a second transverse shaft, gearingbetween said transverse shafts, gearing between said ,second transverse shaft and said gummer shaft, pivoted base plates supporting said file carrying bars, a saw feed pawl, operative connections between said second transverse shaft and said reciprocatory file carrying bars, an eccentric on said main shaft, operative connections between said eccentric and said reciproca'tory cross head, a reciprocatory rod extending longitudinally of the base and operating said feed pawl, a block movable with said rod, links connecting said block and said pivoted base and cam means actuated by the main shaft for operating said rod during a period Vof each revolution of the main shaft.

13. In a gin saw filing machine, a base, a transverse shaft supported adjacent the rear end of the base, operating means for said shaft, a longitudinally extending gummer shaft, longitudinally reciprocatory ile carrying. bars, an oscillatory bearing for said gummer shaft, a vertically reciprocatory support for the front end of said gummer shaft, means for periodically moving said support, bevel gearing connecting said transverse shaft and said gummer shaft, crank arms projecting from said transverse shaft, longitudinally reciprocatory cross heads, links connecting said cross heads and Vao said file carrying bars,'pit'men connecting A said cross heads and said crank arms, pivoted base plates supporting said file carrying bars and means for periodically moving said base plates about their pivots.

single operation a movement yoi said plate lengthwise of said support and a reciprocatory movement of said base inthe direction of its aXisrelative to said plate. V

. 15. Yln Va gin saw iiling machine, a base,

saw filing instrumentalities carried thereby, support for said base, a-platerslidable lengthwise of lsaid support, the latterrextending transversely of said (base, said base receiving support from said vplate and being movable in the direction of its laxis relatively .to said plate, a lever pivotedy .at one' end thereof to said plate and "extending transl ,versely thereof, ay spring catch normally .14. In a gin' saw filing machine,` a base,

.holding said leven-a second plate imposed v upon said first-namedy plate and connected to said base, a link connecting said lever and said second plate, a movement ofY said levier@ 'y producing a vmovement of said second plate and therewith of `said base in the direction of the longitudinal 'axis of said base,`a dog arranged atoneside of said second plate and a holder for said dog and onwhich the lat-l i ter is pivoted, a spring acting upon said dog,

and a'spring connecting said holder and said base and tending to draw the holder toward le the base', the holder being held by the spring connected thereto whereby it is slidable lengthwise of'said support `in one direction Y WYLEYL'. PADGETT.-

' Witnesses: l v i JAMES R. BROWN,` f Y HUGH R. BLACK. er

Copies of-ths patent may Vbe obtained `for Vlive cents each, by. addressing the Commissionrof Patents,

WashingtoInC.

.se Y

35 having toothed 'engagement therewith, and p Y and tending to etfect its A 

